A working profile, tested.

services/filestore/firejail/convert.profile

@@ -25,14 +25,15 @@ read-only /usr
 blacklist /var
 
 caps.drop all
-noroot
+# noroot
 nogroups
 protocol unix
 net none
 private-tmp
 private-dev
 shell none
-seccomp.keep _llseek,_newselect,accept,accept4,access,alarm,arch_prctl,bind,breakpoint,brk,cacheflush,capget,capset,chdir,chmod,chown,chown32,chroot,clock_getres,clock_gettime,clock_nanosleep,clone,close,connect,copy_file_range,creat,dup,dup2,dup3,epoll_create,epoll_create1,epoll_ctl,epoll_ctl_old,epoll_pwait,epoll_wait,epoll_wait_old,eventfd,eventfd2,execve,execveat,exit,exit_group,faccessat,fadvise64,fadvise64_64,fallocate,fanotify_init,fanotify_mark,fchdir,fchmod,fchmodat,fchown,fchown32,fchownat,fcntl,fcntl64,fdatasync,fgetxattr,flistxattr,flock,fork,fremovexattr,fsetxattr,fstat,fstat64,fstatat64,fstatfs,fstatfs64,fsync,ftruncate,ftruncate64,futex,futimesat,get_robust_list,get_thread_area,getcpu,getcwd,getdents,getdents64,getegid,getegid32,geteuid,geteuid32,getgid,getgid32,getgroups,getgroups32,getitimer,getpeername,getpgid,getpgrp,getpid,getppid,getpriority,getrandom,getresgid,getresgid32,getresuid,getresuid32,getrlimit,getrusage,getsid,getsockname,getsockopt,gettid,gettimeofday,getuid,getuid32,getxattr,inotify_add_watch,inotify_init,inotify_init1,inotify_rm_watch,io_cancel,io_destroy,io_getevents,io_setup,io_submit,ioctl,ioprio_get,ioprio_set,ipc,kill,lchown,lchown32,lgetxattr,link,linkat,listen,listxattr,llistxattr,lremovexattr,lseek,lsetxattr,lstat,lstat64,madvise,memfd_create,mincore,mkdir,mkdirat,mknod,mknodat,mlock,mlock2,mlockall,mmap,mmap2,modify_ldt,mprotect,mq_getsetattr,mq_notify,mq_open,mq_timedreceive,mq_timedsend,mq_unlink,mremap,msgctl,msgget,msgrcv,msgsnd,msync,munlock,munlockall,munmap,nanosleep,newfstatat,open,openat,pause,personality,personality,personality,pipe,pipe2,poll,ppoll,prctl,pread64,preadv,prlimit64,pselect6,pwrite64,pwritev,read,readahead,readlink,readlinkat,readv,recv,recvfrom,recvmmsg,recvmsg,remap_file_pages,removexattr,rename,renameat,renameat2,restart_syscall,rmdir,rt_sigaction,rt_sigpending,rt_sigprocmask,rt_sigqueueinfo,rt_sigreturn,rt_sigsuspend,rt_sigtimedwait,rt_tgsigqueueinfo,sched_get_priority_max,sched_get_priority_min,sched_getaffinity,sched_getattr,sched_getparam,sched_getscheduler,sched_rr_get_interval,sched_setaffinity,sched_setattr,sched_setparam,sched_setscheduler,sched_yield,seccomp,select,semctl,semget,semop,semtimedop,send,sendfile,sendfile64,sendmmsg,sendmsg,sendto,set_robust_list,set_thread_area,set_tid_address,set_tls,setdomainname,setfsgid,setfsgid32,setfsuid,setfsuid32,setgid,setgid32,setgroups,setgroups32,sethostname,setitimer,setpgid,setpriority,setregid,setregid32,setresgid,setresgid32,setresuid,setresuid32,setreuid,setreuid32,setrlimit,setsid,setsockopt,setuid,setuid32,setxattr,shmat,shmctl,shmdt,shmget,shutdown,sigaltstack,signalfd,signalfd4,sigreturn,socket,socketpair,splice,stat,stat64,statfs,statfs64,symlink,symlinkat,sync,sync_file_range,syncfs,sysinfo,syslog,tee,tgkill,time,timer_create,timer_delete,timer_getoverrun,timer_gettime,timer_settime,timerfd_create,timerfd_gettime,timerfd_settime,times,tkill,truncate,truncate64,ugetrlimit,umask,uname,unlink,unlinkat,utime,utimensat,utimes,vfork,vhangup,vmsplice,wait4,waitid,waitpid,write,writev
+
+seccomp.keep accept,accept4,access,alarm,arch_prctl,bind,brk,capget,capset,chdir,chmod,chown,chroot,clock_getres,clock_gettime,clock_nanosleep,clone,close,connect,creat,dup,dup2,dup3,epoll_create,epoll_create1,epoll_ctl,epoll_ctl_old,epoll_pwait,epoll_wait,epoll_wait_old,eventfd,eventfd2,execve,execveat,exit,exit_group,faccessat,fadvise64,fallocate,fanotify_init,fanotify_mark,fchdir,fchmod,fchmodat,fchown,fchownat,fcntl,fdatasync,fgetxattr,flistxattr,flock,fork,fremovexattr,fsetxattr,fstat,fstatfs,fsync,ftruncate,futex,futimesat,get_robust_list,get_thread_area,getcpu,getcwd,getdents,getdents64,getegid,geteuid,getgid,getgroups,getitimer,getpeername,getpgid,getpgrp,getpid,getppid,getpriority,getrandom,getresgid,getresuid,getrlimit,getrusage,getsid,getsockname,getsockopt,gettid,gettimeofday,getuid,getxattr,inotify_add_watch,inotify_init,inotify_init1,inotify_rm_watch,io_cancel,io_destroy,io_getevents,io_setup,io_submit,ioctl,ioprio_get,ioprio_set,kill,lchown,lgetxattr,link,linkat,listen,listxattr,llistxattr,lremovexattr,lseek,lsetxattr,lstat,madvise,memfd_create,mincore,mkdir,mkdirat,mknod,mknodat,mlock,mlockall,mmap,modify_ldt,mprotect,mq_getsetattr,mq_notify,mq_open,mq_timedreceive,mq_timedsend,mq_unlink,mremap,msgctl,msgget,msgrcv,msgsnd,msync,munlock,munlockall,munmap,nanosleep,newfstatat,open,openat,pause,personality,personality,personality,pipe,pipe2,poll,ppoll,prctl,pread64,preadv,prlimit64,pselect6,pwrite64,pwritev,read,readahead,readlink,readlinkat,readv,recvfrom,recvmmsg,recvmsg,remap_file_pages,removexattr,rename,renameat,renameat2,restart_syscall,rmdir,rt_sigaction,rt_sigpending,rt_sigprocmask,rt_sigqueueinfo,rt_sigreturn,rt_sigsuspend,rt_sigtimedwait,rt_tgsigqueueinfo,sched_get_priority_max,sched_get_priority_min,sched_getaffinity,sched_getattr,sched_getparam,sched_getscheduler,sched_rr_get_interval,sched_setaffinity,sched_setattr,sched_setparam,sched_setscheduler,sched_yield,seccomp,select,semctl,semget,semop,semtimedop,sendfile,sendmmsg,sendmsg,sendto,set_robust_list,set_thread_area,set_tid_address,setdomainname,setfsgid,setfsuid,setgid,setgroups,sethostname,setitimer,setpgid,setpriority,setregid,setresgid,setresuid,setreuid,setrlimit,setsid,setsockopt,setuid,setxattr,shmat,shmctl,shmdt,shmget,shutdown,sigaltstack,signalfd,signalfd4,socket,socketpair,splice,stat,statfs,symlink,symlinkat,sync,sync_file_range,syncfs,sysinfo,syslog,tee,tgkill,time,timer_create,timer_delete,timer_getoverrun,timer_gettime,timer_settime,timerfd_create,timerfd_gettime,timerfd_settime,times,tkill,truncate,umask,uname,unlink,unlinkat,utime,utimensat,utimes,vfork,vhangup,vmsplice,wait4,waitid,write,writev
 
 rlimit-fsize 524288000 #500Mb
 rlimit-nproc 200